| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| TRIAN FUND MANAGEMENT, L.P. | 21% | +0.85% | $1,417,161,066 | 31,867,800 | 0% | TRIAN FUND MANAGEMENT, L.P. | 21 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC | 5% | $261,156,985 | 7,875,663 | Millennium Management LLC | 12 May 2025 | |||
| Capital Research Global Investors | 4.5% | $239,019,139 | 7,205,883 | Capital Research Global Investors | 30 Sep 2024 | |||
| MASSACHUSETTS MUTUAL LIFE INSURANCE CO | 0.1% | $412,815 | 9,283 | MASSACHUSETTS MUTUAL LIFE INSURANCE CO | 21 Dec 2025 |
As of 30 Sep 2025, 412 institutional investors reported holding 139,469,922 shares of JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value (JHG). This represents 90% of the company’s total 154,698,058 outstanding shares.
The largest institutional shareholders of JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value (JHG) together control 76% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| TRIAN FUND MANAGEMENT, L.P. | 21% | 31,867,800 | 0% | 35% | $1,418,435,778 |
| BlackRock, Inc. | 11% | 16,376,039 | -4.7% | 0.01% | $728,897,498 |
| VANGUARD GROUP INC | 8.9% | 13,819,977 | -1.7% | 0.01% | $615,127,177 |
| MILLENNIUM MANAGEMENT LLC | 4.4% | 6,851,082 | +20% | 0.24% | $304,941,660 |
| DIMENSIONAL FUND ADVISORS LP | 4.3% | 6,708,910 | -6% | 0.06% | $298,616,275 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.4% | 5,204,670 | +2% | 0.04% | $231,659,862 |
| AQR CAPITAL MANAGEMENT LLC | 3.1% | 4,800,028 | +30% | 0.14% | $213,649,244 |
| STATE STREET CORP | 2.9% | 4,511,890 | -1.4% | 0.01% | $200,824,224 |
| Capital Research Global Investors | 2.4% | 3,744,607 | 0% | 0.03% | $166,672,458 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5% | 2,271,858 | +1.5% | 0.01% | $101,138,552 |
| MORGAN STANLEY | 1.3% | 2,081,626 | +4.1% | 0.01% | $92,653,198 |
| NORTHERN TRUST CORP | 1.3% | 2,079,632 | -6.4% | 0.01% | $92,564,419 |
| ARIEL INVESTMENTS, LLC | 1.3% | 2,044,802 | +0.38% | 0.97% | $91,014,137 |
| Clark Capital Management Group, Inc. | 1.2% | 1,829,676 | +101% | 0.51% | $81,438,886 |
| Fisher Asset Management, LLC | 1.2% | 1,807,154 | +17% | 0.03% | $80,436,423 |
| Allianz Asset Management GmbH | 1.1% | 1,767,657 | +5.7% | 0.1% | $78,678,413 |
| Qube Research & Technologies Ltd | 0.94% | 1,460,756 | -21% | 0.09% | $65,018,250 |
| PRINCIPAL FINANCIAL GROUP INC | 0.94% | 1,460,167 | -13% | 0.03% | $64,992,033 |
| GOLDMAN SACHS GROUP INC | 0.87% | 1,348,991 | +5.9% | 0.01% | $60,043,590 |
| CITADEL ADVISORS LLC | 0.82% | 1,264,759 | -21% | 0.05% | $56,294,423 |
| Capital World Investors | 0.78% | 1,200,041 | 0% | 0.01% | $53,413,825 |
| UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 0.66% | 1,013,534 | -18% | 0.01% | $45,112,400 |
| Bank of New York Mellon Corp | 0.61% | 948,142 | -4.4% | 0.01% | $42,201,800 |
| FIRST TRUST ADVISORS LP | 0.55% | 857,452 | -8.4% | 0.03% | $38,165,188 |
| Invesco Ltd. | 0.55% | 849,264 | -30% | 0.01% | $37,800,741 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 1,338,068 | $63,706,340 | +$6,560,869 | $47.57 | 54 |
| 2025 Q3 | 139,469,922 | $6,207,811,216 | -$98,878,010 | $44.51 | 412 |
| 2025 Q2 | 142,414,348 | $5,531,121,444 | -$35,959,207 | $38.84 | 391 |
| 2025 Q1 | 143,639,235 | $5,190,028,557 | -$43,085,351 | $36.15 | 410 |
| 2024 Q4 | 143,536,002 | $6,104,718,418 | +$208,397,805 | $42.53 | 396 |
| 2024 Q3 | 143,924,611 | $5,480,627,664 | -$63,887,251 | $38.07 | 380 |
| 2024 Q2 | 146,265,993 | $4,930,746,355 | -$1,170,431 | $33.71 | 333 |
| 2024 Q1 | 146,121,888 | $4,805,200,647 | +$16,556,747 | $32.89 | 314 |
| 2023 Q4 | 22,806 | $687,600 | -$2,311,601 | $30.15 | 1 |
| 2023 Q3 | 143,914,672 | $3,715,819,987 | +$28,640,487 | $25.82 | 286 |
| 2023 Q2 | 142,678,372 | $3,887,042,769 | +$62,745,874 | $27.25 | 281 |
| 2023 Q1 | 139,366,910 | $3,711,098,484 | -$73,784 | $26.64 | 279 |
| 2022 Q4 | 139,312,001 | $3,276,973,307 | -$12,516,084 | $23.52 | 265 |
| 2022 Q3 | 140,110,139 | $2,846,525,943 | +$40,056,536 | $20.31 | 238 |
| 2022 Q2 | 137,817,656 | $3,236,599,997 | +$206,190,257 | $23.51 | 253 |
| 2022 Q1 | 126,574,855 | $4,432,912,565 | +$59,951,069 | $35.02 | 260 |
| 2021 Q4 | 128,081,665 | $5,371,136,918 | +$1,051,402,039 | $41.94 | 276 |
| 2021 Q3 | 103,469,784 | $4,276,586,521 | -$55,883,235 | $41.33 | 262 |
| 2021 Q2 | 104,947,451 | $4,072,529,455 | -$27,883,454 | $38.81 | 250 |
| 2021 Q1 | 106,115,651 | $3,305,017,740 | +$586,921,475 | $31.15 | 245 |
| 2020 Q4 | 117,902,661 | $3,831,882,558 | -$175,847,948 | $32.51 | 226 |
| 2020 Q3 | 123,349,022 | $2,678,738,684 | -$283,071,573 | $21.72 | 186 |
| 2020 Q2 | 137,434,593 | $2,908,385,620 | +$31,414,823 | $21.16 | 216 |
| 2020 Q1 | 135,943,064 | $2,082,633,470 | +$7,615,824 | $15.32 | 196 |
| 2019 Q4 | 134,732,926 | $3,294,093,784 | +$2,439,821 | $24.45 | 208 |
| 2019 Q3 | 132,585,836 | $2,977,479,352 | +$27,123,681 | $22.46 | 200 |
| 2019 Q2 | 131,170,773 | $2,806,236,545 | +$266,363,725 | $21.40 | 189 |
| 2019 Q1 | 123,026,365 | $3,071,240,911 | +$130,554,734 | $24.98 | 185 |
| 2018 Q4 | 116,511,151 | $2,412,713,275 | +$98,160,441 | $20.72 | 177 |
| 2018 Q3 | 112,478,689 | $3,029,653,061 | +$102,612,410 | $26.96 | 180 |
| 2018 Q2 | 109,195,138 | $3,353,151,206 | +$247,704,903 | $30.73 | 188 |
| 2018 Q1 | 102,695,482 | $3,396,681,524 | +$175,876,072 | $33.09 | 184 |
| 2017 Q4 | 97,102,471 | $3,715,554,555 | +$79,998,142 | $38.26 | 184 |
| 2017 Q3 | 95,026,836 | $3,310,600,082 | -$70,014,020 | $34.84 | 174 |
| 2017 Q2 | 97,056,201 | $3,213,730,964 | +$3,207,718,410 | $33.11 | 156 |
| 2016 Q3 | 14,741 | $514,000 | $0 | $34.87 | 1 |